Adds .stignore, .stfolder*, .stversions, *.sync-conflict-* so future
syncs don't pollute the working tree. Deleted existing conflict files
and stale .stfolder.removed-* (current files won).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Vue 3 + Vite + Tailwind frontend, Fastify API server, execa shell bridge.
All components built, server validated, 41 unit tests passing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
